CN207664629U - A kind of combined type tune benefit device circuit structure - Google Patents
A kind of combined type tune benefit device circuit structure Download PDFInfo
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- CN207664629U CN207664629U CN201721785335.4U CN201721785335U CN207664629U CN 207664629 U CN207664629 U CN 207664629U CN 201721785335 U CN201721785335 U CN 201721785335U CN 207664629 U CN207664629 U CN 207664629U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The utility model is a kind of combined type tune benefit device circuit structure, its main feature is that, including：Static reactive generator (SVG) and modular integrated capacitor device tune mend device (ITD), static reactive generator (SVG) mends device (ITD) side by side positioned on mounted in load front end with modular integrated capacitor device tune, secondary current series connection mounted in the current transformer of net side mends device (ITD) by static reactive generator (SVG) and modular integrated capacitor device tune, one group of current transformer is housed in static reactive generator (SVG) leading-out terminal, secondary line and the current on line side mutual inductor secondary side of mutual inductor are connected in inverse parallel.Have many advantages, such as that low in energy consumption, capacity is big, dynamic response is fast, noise is small, facilitate installation and O＆M convenient and cost-effective.
Description
Technical field
The utility model is related to reactive power compensation technology fields, are a kind of combined type tune benefit device circuit structures.
Background technology
Under normal conditions, three-phase transformer connects three-phase balance and symmetry load in distribution system, and system is in symmetrical operation shape
State, three-phase current is equal in magnitude, and adjacent alternate phase difference is equal.But the actually access due to a large amount of single-phase loads and use
The asynchronism of electricity causes three-phase load that asymmetry change occurs, causes three-phase current that asymmetry change also occurs, cause three-phase
Size, the phase of electric current are different, and adjacent alternate phase difference is also unequal, thus the electric current in system just occur it is not right
Claim, also referred to as three-phase current unbalance.The imbalance of three-phase current can cause neutral line current to increase, and then will produce transformer
Iron loss and copper loss increase considerably, and the load capacity of transformer declines, and insulation ag(e)ing is accelerated, and zero curve is blown, meter metering is inaccurate
The problems such as.In recent years, with the fast development of applied power electronics technology, a large amount of nonlinear-load accesses power grid, produces
A large amount of harmonic wave and neutral line current, while exacerbating energy imbalance.Therefore it is improvement three-phase current unbalance and raising electric energy
Quality problems, those skilled in the art use following several technical measures.
1. passive tune mends device
Caused by the asymmetry of mains side three-phase current is by the asymmetry of three-phase load, so if with idle member
Part constructs an asymmetric admittance network relative to the out-of-balance load, it is attempted by the load side after three phase mains,
The total load after synthesis is allowed to become symmetrical, then the asymmetric three-phase output current of mains side is transformed into the three-phase current of balance
, asymmetric compensation admittance network principle of compositionality is as shown in Figure 1.
Resistance R is connected between the A phases of three phase mains and zero, before all capacitances of no access and inductance, only A phases have
Electric current, for B, C phase all without electric current, this is a serious unbalanced system.To make A phase currents be evenly distributed between three-phase and every
Phase power factor can be compensated to 1, and unbalanced adjustment and power factor compensation are carried out using method as shown in Figure 1：
(1), the phenomenon that capacitance C1 is accessed between A, B phase：
In terms of A phases：Due to 90 ° of advanced capacitance C1 voltages Uc of capacitance current Ic1.At this moment, it is embodied perpendicular to A phases in A phases
Capacitive reactive power current component+the Iqc1 of the voltage and negative active current-Ipc opposite with A phase voltages direction.
In terms of B phases：Similarly, 90 ° of the advanced capacitance C1 voltages Uc of capacitance current Ic1.At this moment, it is embodied perpendicular to B in B phases
Capacitive reactive power current component+the Iqc1 of phase voltage and positive active current+Ipc identical with B phase voltages direction.
It is therefore seen that：After the capacitance C1 bridged between A, B phase, the part watt current of A phases has been transferred to B phases.
If properly selecting capacitance C1, it is allowed to be the 1/3 of A phase watt currents in the active current-Ipc of A phases, this
When, 1/3 watt current of A phases will be transferred to B phases by capacitance C1, i.e.,：Positive active current identical with B phase voltages direction
+Ipc。
(2) the phenomenon that inductance L1 is accessed between A, C phase：
In terms of A phases：Due to 90 ° of the voltage UL of inductive current IL1 lag inductance L1.One is embodied perpendicular to A in A phases
Inductive reactive power current component-the IqL1 of the phase voltage and negative active current-IpL opposite with A phase voltages direction.
In terms of C phases：Similarly, inductive current IL1 lags 90 ° of the voltage UL of inductance L1.One is embodied perpendicular to C in C phases
Inductive reactive power current component-the IqL1 of phase voltage and positive active current+IpL identical with C phase voltages direction.
It is therefore seen that：After bridging inductance L1 between A, C phase, the part watt current of A phases has been transferred to C phases.
If properly selecting capacitance L1, it is allowed to be the 1/3 of A phase watt currents in the active current-IpL of A phases, this
When, 1/3 watt current of A phases will be transferred to C phases by capacitance L1.
Found out by above-mentioned analysis：1/3 watt current of A phases is transferred to B phases by capacitance C1, and inductance L1 is again by the 1/3 of A phases
Watt current has been transferred to C phases.At this moment B phases have 1/3 watt current, C phases also to have 1/3 watt current, A phases also only to leave
1/3 watt current.So three-phase watt current complete equipilibrium.
(3) three-phase activity coefficient after adjusting：
A phase power factors：Capacitance C1 A phases capacitive reactive power current component+Iqc1 and inductance L1 A phases inductive reactive power
Component-IqL1 cancels out each other.The phase reactive current is zero, power factor 1.
B phase power factors：Inductance L2 is properly accessed between B phases and zero, is allowed to the inductive reactive power electric current point in B phases
Amount-IqL2 just offsets the compatibility reactive current component+Iqc1.The phase reactive current is zero, power factor 1.
C phase power factors：Capacitance C2 is properly accessed between C phases and zero, is allowed to the capacitive reactive power current component in C phases
+ Iqc2 just offsets the phase inductive reactive power current component-IqL1.The phase reactive current is zero, power factor 1.
It is above analysis shows：As long as having access between phase and phase inductively or capacitively, fully achieved in phase
Active purpose is shifted between phase.It is analyzed according to principles above, in the capacitor of alternate access one kilovar, can be shifted
0.289 kilowatt of active power.For the low-voltage distribution system of 380V, the watt current for being converted into transfer is about 0.76A.So
The size of the watt current of transfer depend on access capacitive coupling device size and load inductive reactive power number.When actual negative
When lotus is equivalent to several resistance, as long as calculating separately out compensation rate according to the case where each resistance, according still further to superposition principle phase
Adding can.How inductance needed for solving device, become the restriction condition constituted for device.It is deposited in actual load system
In a large amount of inductive load, these inductive loads can be regarded as equivalent reactance device, so just cleverly solved by device
The problem of reactor needed for device.As stated above, it as long as load system is enough to inductive reactive power, then accesses enough
Capacitor can achieve the effect that active balance and reactive-load compensation are zero.If the inductive reactive power in negative is insufficient, will cause to fill
It is inadequate to set transfer watt current ability.
Based on above-mentioned technical principle, application number：201420588376.4 it is general energy saving to disclose the applicant Jilin Tener
Technology Co., Ltd., it is entitled filed in 13 days October in 2014：" modular integrated capacitor device tune mends device ", sees Fig. 2
It is shown, it is a kind of passive capacitor tune benefit device, this modular integrated capacitor device tune mends device, including man-machine interface control
Molding block, control module, power module, at least two switch modules, the magnetic latching relay of each switch module and 3 it is single-phase
Capacitor is connected, and Angle connection or star-like connection are constituted between three-phase alternating-current supply, and man machine interface control block measures mould
Block, switch module are interconnected by 485 fieldbus；Alternating current is become DC power supply and controlled man-machine interface by power module
Module, control module, switch module power supply；Control module carries out data acquisition to externally input alternating voltage, current signal
And calculation processing, and give calculation processing result to man machine interface control block by 485 fieldbus, man-machine interface controls mould
Root tuber carries out analysis calculating according to the data that control module is sent up, and sends out action directive to each switch module, switch
It is disconnected when module control magnetic latching relay is closed when contact both end voltage is zero and electric current is zero, realizes capacitor group three
Mutually each alternate inequality switching arbitrary between phase zero achievees the purpose that adjust Active current balance compensating power simultaneously.Tool
Have simple in structure, reliability is high, and is easy scheduling and planning, convenient for safeguarding, and can by different proportion flexible allocation corner connection group and
The advantages that quantity that star connects group realizes required function, but this modular integrated capacitor device tune is repaid in device operational process such as
Current-limiting reactor not will produce certain harmonic wave to fruit, and there is adjusting to mend the shortcomings of precision is low, and speed is slow, and inhibition harmonic wave is poor, still
The problem of three-phase current unbalance cannot be fully solved and more effectively improve power quality.
2. static reactive generator (SVG), i.e. active type tune mend device, also referred to as three-phase imbalance compensation device static reacance
The basic principle of generator (SVG) is, by voltage source inverter, to be connected in parallel on power grid by reactor.Voltage-source type inversion
Device includes two parts of DC capacitor and inverter bridge, and wherein inverter bridge is made of the semiconductor devices IGBT that can be turned off.
In work, by adjusting the switch of IGBT device in inverter bridge, DC inversion can be controlled to the voltage exchanged
Amplitude, waveform and phase, therefore, whole device are equivalent to a phase modulation power supply.It, can be with by idle needed for detecting system
It quickly sends out equal in magnitude, opposite in phase idle, realizes idle in-situ balancing, keep the real-time High Power Factor fortune of system
Row.
Fig. 3 is static reactive generator (SVG) schematic diagram, regards system as an infinitely great voltage source, SVG is considered as
One controllable voltage source, linked reactor can be equivalent at a linear impedance element.By controlling inverter output voltage
Phase, size and waveform so that SVG can compensate fundamental reactive current, adjustment three phase unbalance current, also can be right simultaneously
Harmonic current compensates, and is used widely in mesolow power quality controlling field.Compared with device being mended with passive type tune,
Advantage is：
(1) static reactive generator (SVG) is current source type device, idle needed for active tracing compensation system；Slave
Large bulk capacitance/reactance component is avoided in reason is connected in parallel on the resonance phenomena that may occur in power grid；At the end of power grid weakness
End uses, safety specific impedance type device higher；
(2) faster, the dynamic reactive response speed of single unit system is less than the response speed of static reactive generator (SVG)
10ms, and the passive reactive power compensator response time is in 200ms or more.In contrast, SVG realizes qualitative leap, for the first time
The response time of dynamic passive compensation is shortened within a power frequency period；
(3) harmonic characterisitic in static reactive generator (SVG) is more preferable, and passive type tune is mended all to be generated in device operational process
Larger harmonic wave, and static reactive generator (SVG) itself does not generate harmonic wave, at the same can also filtering appts harmonic wave, ensure operation
Safety；
(4) static reactive generator (SVG) uses the cabinet type installation of modularized design and family, engineering design and installation workload
It is small；
(5) it is impedance type characteristic that passive tune, which mends device, exports the square directly proportional of reactive capability and busbar voltage；It is static
Reacance generator (SVG) has the characteristic of current source, and output capacity and busbar voltage are at linear dependence.It is relatively low in busbar voltage
In the case of, SVG contributes greatly, adjusts benefit effect more preferable.But there is itself will produce when operation for static reactive generator (SVG)
The noise of power consumption and cooling fan, and the shortcomings of cost is higher.
For this purpose, the prior art improves static reactive generator (SVG), there is a kind of plug-in capacitor device structure
SVG, worked with master-slave mode, i.e., directly controlling external capacitor switching by the expansion interface of itself institute's band by SVG uses
It is idle with the basis for compensating load.If Fig. 4 is the expansion I/O Terminal control capacitor switching switch Ki by SVG itself；Fig. 5 is
The fling-cut switch Ki of capacitor is controlled by the serial communication interface of SVG itself.But the modified plug-in capacitor device of the prior art
The shortcomings that SVG of structure is, this hypotactic control mode be capacitor and SVG cooperation and control strategy all by
SVG undertakes, and program is complicated, and the equipment control model manufactured by each equipment manufacturer is different, and is not sought unity of standard, and is integrated
Get up highly difficult, once and SVG break down, whole device will fail.
Invention content
The purpose of this utility model is to overcome passive capacitor tune benefit device and static reactive generator in the prior art
(SVG) the shortcomings that being individually present, to the prior art carry out organically combination and it is substantive innovate, provide a kind of dynamic tune mend with it is quiet
State tune mends the parallel combined, and dynamic adjusts filling mining static reactive generator (SVG), static state tune filling mining modular integrated capacitor device
It adjusts and mends device (ITD), give full play to the rapid dynamic response speed and modular integrated capacitor device of static reactive generator (SVG)
The respective advantage for mending the big low-power consumption of device (ITD) capacity is adjusted, so that black box is had, low in energy consumption, capacity is big, dynamic response is fast, makes an uproar
Sound is small, facilitate installation and O＆M is convenient and cost-effective combined type tune mends device circuit structure；And combined type tune is provided and mends dress
The control method set.
Realize the purpose of this utility model the technical solution adopted is that：A kind of combined type tune benefit device circuit structure, it is special
Sign is that it includes：Static reactive generator (SVG) and modular integrated capacitor device tune mend device (ITD), and static reacance occurs
Device (SVG) mends device (ITD) side by side positioned on load front end is mounted in modular integrated capacitor device tune, and the electric current mounted in net side is mutual
The secondary current series connection of sensor mends device (ITD) by static reactive generator (SVG) and modular integrated capacitor device tune,
Static reactive generator (SVG) leading-out terminal is equipped with one group of current transformer, secondary line and the current on line side mutual inductance of the mutual inductor
Device secondary side is connected in inverse parallel.
Permanent magnetism type contactor KM is concatenated on the static reactive generator (SVG) electric power connection line, passes through modular one
Body capacitor tune, which mends device (ITD) and controls permanent magnetism type contactor KM closures or disconnect static reactive generator (SVG) power supply, to be made
Its input or out of service.
3) the capacity ratio that the static reactive generator (SVG) mends device (ITD) with modular integrated capacitor device tune is
3:7。
The advantages of a kind of combined type tune benefit device circuit structure and control method of the utility model, is embodied in：
Since a kind of combined type tune of the utility model mends device circuit structure, using static reactive generator (SVG) and
Modular integrated capacitor device tune mends device (ITD), and static reactive generator (SVG) is mended with modular integrated capacitor device tune and filled
It sets (ITD) and is mounted on load front end side by side, do not control mutually, respective independent operating.Measurement method is routinely compensated, mounted in net side electricity
The secondary current series connection of current transformer mends device by static reactive generator (SVG) and modular integrated capacitor device tune
(ITD).One group of current transformer is housed in SVG leading-out terminals, the secondary line and current on line side mutual inductor secondary side of the mutual inductor are anti-
To being connected in parallel, vector superposed to current on line side and the progress of SVG electric currents, the measurement electric current SVG outputs of SVG and ITD are flowed through in elimination
Electric current influences ingredient, i.e., removes the component influences of SVG output currents, then the working method of SVG current transformers is set as
Load side, then ITD can be mended according to the variation of load into line trace tune, and the result after SVG is mended according to ITD tune is right again
Load finely adjusts benefit into Mobile state, and load is mended to realize dynamically to adjust in compensating unit capacity.The great advantage of the program is
SVG and ITD realizes mutual automatic seamless cooperation by the vector superposed electric current that measures of current transformer, by ITD maximums
Benefit capacity is adjusted on the basis of undertaking of degree, minimizes SVG burdens, and so that device operation is in always, power consumption is minimum, it is optimal to coordinate
State, and any one equipment fault does not interfere with the operation of another equipment, the reliability of entire component is high；
It is adjusted automatically due to the ITD types of use and mends Electric capacity compensation device application embedded scm technology, phased switching capacitance
Device switching technique, Electromechanical Design manufacturing technology, will be built in circuit of measurement and control, simultaneous switching circuit and Duo Tai in one
The capacitor group integrated design of three single-phase electricity containers is constituted, and realizes complete reactive power compensator componentization, has reliability
High, small, the features such as capacity is big, function is strong, easy to install and use, the feature of device maximum also resides in, it passes through uniqueness
Electrical structure and control strategy, automatically control capacitor and overlapped in the alternate inequality between phase and zero curve, carried out to mains side
The asymmetric autobalanceization adjustment of burden with power while compensating power (referred to as " adjust and mend "), substantially reduce neutral line current,
And keep power factor up to standard；
Since the static reactive generator (SVG) used is general modular product, main circuit uses three-level topology
Structure has the characteristics that power density height, good wave filtering effect, small, and module has adjust automatically three phase unbalance current, disappears
Except harmonics and reactive compensation function, the matching of function can select to set by software, and application is very flexible；
Due to the electricity-saving function stopped transport automatically when the utility model is designed with underload, i.e., when reactive load and three-phase current
When degree of unbalancedness is less than setting value, to cut off power supply automatically out of service by controlling permanent magnetism type contactor KM for device.When load without
When work(and three-phase current unbalance degree are greater than the set value, device starts automatically to put into operation, to realize the economical operation of component.
When device assembly is out of service, the quiescent dissipation of package unit is less than 10 watts；
As a result of the ITD for coordinating larger capacity compared with the SVG of low capacity, when work the reactive-load compensation of load mainly by
Capacitor undertakes, emphasis solve it is idle caused by line loss, and SVG mainly undertake watt current equilibrating adjustment and
Inhibit harmonic operation, it generally can be by 3:7 ratio configures the capacity of SVG and ITD, you can effectively reduces the injustice of three-phase current
Weighing apparatus degree improves power supply quality and transformer station high-voltage side bus operating mode and can inhibit harmonic wave, improves the safety in operation of primary equipment and makes
With the service life, for benefit comparable to energy saving gained, the utility model is a machine triple effect, and cost performance is high.
Description of the drawings
Fig. 1 is that passive tune mends device circuit schematic diagram；
Fig. 2 is that modular integrated capacitor device tune repays device circuit schematic diagram；
Fig. 3 is static reactive generator (SVG) circuit diagram；
Fig. 4 is the expansion I/O Terminal control capacitor switching switch Ki schematic diagrames of static reactive generator (SVG)；
Fig. 5 is that the serial communication interface of static reactive generator (SVG) controls the fling-cut switch Ki schematic diagrames of capacitor；
Fig. 6 is that a kind of combined type tune of the utility model mends device circuit structure principle chart；
Fig. 7 is that a kind of combined type tune of the utility model mends the control flow chart of device.
Specific implementation mode
Below with drawings and examples, the utility model is described in further detail.
With reference to Fig. 6, a kind of combined type tune benefit device circuit structure, including：Static reactive generator (SVG) and modular one
Body capacitor tune mends device (ITD), and the static reactive generator (SVG) mends device with modular integrated capacitor device tune
(ITD) side by side positioned on load front end is mounted in, static reacance is passed through in the secondary current series connection mounted in the current transformer of net side
Device (SVG) mends device (ITD) with modular integrated capacitor device tune, and one group is equipped in static reactive generator (SVG) leading-out terminal
Current transformer, secondary line and the current on line side mutual inductor secondary side of the mutual inductor are connected in inverse parallel, to current on line side and
The progress of static reactive generator (SVG) electric current is vector superposed, and static reactive generator (SVG), modular integration are flowed through in elimination
Capacitor tune mends the measurement electric current of device (ITD), influences ingredient to static reactive generator (SVG) output current, i.e., will be static
The component influences of reacance generator (SVG) output current remove, then by the work of static reactive generator (SVG) current transformer
Mode is set as load side, and then modular integrated capacitor device tune is mended device (ITD) and can be carried out according to the variation of load
Tracking, which is adjusted, mends, and static reactive generator (SVG) mends device (ITD) according to modular integrated capacitor device tune and adjusts the knot after mending
Fruit finely adjusts benefit into Mobile state to load again, and load is mended to realize dynamically to adjust in compensating unit capacity；Static reacance occurs
Device (SVG) and modular integrated capacitor device tune are mended device (ITD) and are realized by the vector superposed measurement electric current of current transformer
Mutual seamless cooperation is mended device (ITD) and is undertaken basis to the greatest extent and adjust to mend and held by modular integrated capacitor device tune
Amount minimizes static reactive generator (SVG) burden, and device operation is made to be in the state that power consumption is minimum, cooperation is optimal always,
And any one equipment fault does not interfere with the operation of another equipment, the reliability of entire component is high.The utility model designs
There is the electricity-saving function stopped transport automatically when underload.I.e. when reactive load and three-phase current unbalance degree are less than setting value, device
It is out of service that power supply is cut off automatically by control permanent magnetism type contactor KM.It is set when reactive load and three-phase current unbalance degree are more than
When definite value, device starts automatically to put into operation, to realize the economical operation of component.When device is out of service, static work(
Consumption is less than 10 watts.
The utility model coordinates the modular of larger capacity as a result of the static reactive generator (SVG) compared with low capacity
Integrated capacitor device tune mends device (ITD), when work the reactive-load compensation of load mainly undertaken by capacitor, emphasis solves
Line loss caused by idle, and the main equilibrating adjustment work for undertaking watt current of static reactive generator (SVG), by 3:
7 ratio mends the capacity of device (ITD) to configure static reactive generator (SVG) and modular integrated capacitor device tune, you can
The degree of unbalancedness of three-phase current is effectively reduced, power supply quality and transformer station high-voltage side bus operating mode are improved and harmonic wave can be inhibited, improves one
The safety in operation and service life of secondary device, for benefit comparable to energy saving gained, the utility model is a machine triple effect, cost performance
It is high.For ease of O＆M and Fast Installation in comprehensive distribution box, the utility model is designed using frame-type modular construction, i.e., will
Including modular integrated capacitor device tune mend device (ITD), static reactive generator (SVG) and its sub-appliance service entrance switch,
Contactor, the protector that shoves, current transformer, DTU communication units, connecting terminal component are assembled in a metal framework,
And its internal wirings is completed, functional unit component is formed, then be fixed in distribution box by four fang bolts.This
The structure of sample is highly convenient for large-scale production, and facilitates user's O＆M.A kind of combined type tune of the utility model mends device control
Flow is as shown in Figure 7.
The control process that a kind of combined type tune of the utility model mends device circuit structure is：
1) static reactive generator (SVG) is used to mend device (ITD) side by side positioned on dress with modular integrated capacitor device tune
In load front end, static reactive generator (SVG) and modular are passed through in the secondary current series connection mounted in the current transformer of net side
Integrated capacitor device tune mends device (ITD), and one group of current transformer is housed in static reactive generator (SVG) leading-out terminal, described
The secondary line of mutual inductor is connected in inverse parallel with current on line side mutual inductor secondary side, to current on line side and static reactive generator
(SVG) electric current carries out vector superposed, and static reactive generator (SVG) is flowed through in elimination, modular integrated capacitor device tune mends device
(ITD) measurement electric current influences ingredient, i.e., by static reactive generator (SVG) to static reactive generator (SVG) output current
The component influences of output current remove, then the working method of static reactive generator (SVG) current transformer is set as load
Side, then modular integrated capacitor device tune mend device (ITD) and can be mended into line trace tune according to the variation of load, and it is static
Reacance generator (SVG) but according to modular integrated capacitor device tune mend device (ITD) adjust mend after result again to load carry out
Fine adjust of dynamic is mended, and load is mended to realize dynamically to adjust in compensating unit capacity；Static reactive generator (SVG) and modular
Integrated capacitor device tune mends device (ITD) realizes mutual seamless match by the vector superposed electric current that measures of current transformer
It closes, the maximum basis tune of undertaking of device (ITD) is mended by modular integrated capacitor device tune and mends capacity, minimizes static nothing
Work(generator (SVG) burden makes device operation be in the state that power consumption is minimum, cooperation is optimal, and the event of any one equipment always
Barrier does not interfere with the operation of another equipment, and the reliability of entire component is high；
2) when reactive load and three-phase current unbalance degree are less than setting value, static reactive generator (SVG) and module
Formula integrated capacitor device tune mends device (ITD), and by controlling permanent magnetism type contactor KM, to cut off power supply automatically out of service, works as load
When idle and three-phase current unbalance degree is greater than the set value, device starts automatically to put into operation；
3) static reactive generator (SVG) mends the nothing of load when device (ITD) works with modular integrated capacitor device tune
Work(compensation is mainly undertaken by capacitor, emphasis solve it is idle caused by line loss, and static reactive generator (SVG) is main
The equilibrating adjustment work for undertaking watt current, by 3:7 ratio configures static reactive generator (SVG) and modular one
Body capacitor tune mends the capacity of device (ITD).
Specific embodiment of the present utility model is not exhaustive, and those skilled in the art are without the simple of creative work
It replicates and improves, the protection domain of the utility model claims should be belonged to.
Claims (3)
1. a kind of combined type tune mends device circuit structure, characterized in that it includes：Static reactive generator (SVG) and modular
Integrated capacitor device tune mends device (ITD), and static reactive generator (SVG) mends device with modular integrated capacitor device tune
(ITD) it is mounted on load front end side by side, static reactive generator is passed through in the secondary current series connection mounted in the current transformer of net side
(SVG) device (ITD) is mended with modular integrated capacitor device tune, in static reactive generator (SVG) leading-out terminal equipped with one group of electricity
Current transformer, secondary line and the current on line side mutual inductor secondary side of the mutual inductor are connected in inverse parallel.
2. a kind of combined type tune according to claim 1 mends device circuit structure, characterized in that sent out in the static reacance
Permanent magnetism type contactor KM is concatenated on raw device (SVG) electric power connection line, mending device (ITD) by modular integrated capacitor device tune controls
Permanent magnetism type contactor KM processed, which is closed or disconnects static reactive generator (SVG) power supply, makes its input or out of service.
3. a kind of combined type tune according to claim 1 mends device circuit structure, characterized in that the static reacance occurs
The capacity ratio that device (SVG) mends device (ITD) with modular integrated capacitor device tune is 3:7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721785335.4U CN207664629U (en) | 2017-12-19 | 2017-12-19 | A kind of combined type tune benefit device circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721785335.4U CN207664629U (en) | 2017-12-19 | 2017-12-19 | A kind of combined type tune benefit device circuit structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834573A (en) * | 2017-12-19 | 2018-03-23 | 吉林特纳普节能技术有限公司 | A kind of combined type, which is adjusted, mends device circuit structure and control method |
| CN109617117A (en) * | 2018-12-05 | 2019-04-12 | 国网北京市电力公司 | A protection system and method for SUC parallel full power test |
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2017
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834573A (en) * | 2017-12-19 | 2018-03-23 | 吉林特纳普节能技术有限公司 | A kind of combined type, which is adjusted, mends device circuit structure and control method |
| CN107834573B (en) * | 2017-12-19 | 2023-08-15 | 吉林特纳普节能技术有限公司 | Circuit structure of composite type compensation adjusting device and control method |
| CN109617117A (en) * | 2018-12-05 | 2019-04-12 | 国网北京市电力公司 | A protection system and method for SUC parallel full power test |
| CN109617117B (en) * | 2018-12-05 | 2022-02-11 | 国网北京市电力公司 | A protection system and method for SUC parallel full power test |
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Granted publication date: 20180727 Termination date: 20211219 |